<?php

function smarty_function_fetch($params,&$smarty)
{
if (empty($params['file'])) {
$smarty->_trigger_fatal_error("[plugin] parameter 'file' cannot be empty");
return;
}
$content = '';
if ($smarty->security &&!preg_match('!^(http|ftp)://!i',$params['file'])) {
$_params = array('resource_type'=>'file','resource_name'=>$params['file']);
require_once(SMARTY_CORE_DIR .'core.is_secure.php');
if(!smarty_core_is_secure($_params,$smarty)) {
$smarty->_trigger_fatal_error('[plugin] (secure mode) fetch \''.$params['file'] .'\' is not allowed');
return;
}
if($fp = @fopen($params['file'],'r')) {
while(!feof($fp)) {
$content .= fgets ($fp,4096);
}
fclose($fp);
}else {
$smarty->_trigger_fatal_error('[plugin] fetch cannot read file \''.$params['file'] .'\'');
return;
}
}else {
if(preg_match('!^http://!i',$params['file'])) {
if($uri_parts = parse_url($params['file'])) {
$host = $server_name = $uri_parts['host'];
$timeout = 30;
$accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
$agent = "Smarty Template Engine ".$smarty->_version;
$referer = "";
$uri = !empty($uri_parts['path']) ?$uri_parts['path'] : '/';
$uri .= !empty($uri_parts['query']) ?'?'.$uri_parts['query'] : '';
$_is_proxy = false;
if(empty($uri_parts['port'])) {
$port = 80;
}else {
$port = $uri_parts['port'];
}
if(!empty($uri_parts['user'])) {
$user = $uri_parts['user'];
}
if(!empty($uri_parts['pass'])) {
$pass = $uri_parts['pass'];
}
foreach($params as $param_key =>$param_value) {
switch($param_key) {
case "file":
case "assign":
case "assign_headers":
break;
case "user":
if(!empty($param_value)) {
$user = $param_value;
}
break;
case "pass":
if(!empty($param_value)) {
$pass = $param_value;
}
break;
case "accept":
if(!empty($param_value)) {
$accept = $param_value;
}
break;
case "header":
if(!empty($param_value)) {
if(!preg_match('![\w\d-]+: .+!',$param_value)) {
$smarty->_trigger_fatal_error("[plugin] invalid header format '".$param_value."'");
return;
}else {
$extra_headers[] = $param_value;
}
}
break;
case "proxy_host":
if(!empty($param_value)) {
$proxy_host = $param_value;
}
break;
case "proxy_port":
if(!preg_match('!\D!',$param_value)) {
$proxy_port = (int) $param_value;
}else {
$smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
return;
}
break;
case "agent":
if(!empty($param_value)) {
$agent = $param_value;
}
break;
case "referer":
if(!empty($param_value)) {
$referer = $param_value;
}
break;
case "timeout":
if(!preg_match('!\D!',$param_value)) {
$timeout = (int) $param_value;
}else {
$smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
return;
}
break;
default:
$smarty->_trigger_fatal_error("[plugin] unrecognized attribute '".$param_key."'");
return;
}
}
if(!empty($proxy_host) &&!empty($proxy_port)) {
$_is_proxy = true;
$fp = fsockopen($proxy_host,$proxy_port,$errno,$errstr,$timeout);
}else {
$fp = fsockopen($server_name,$port,$errno,$errstr,$timeout);
}
if(!$fp) {
$smarty->_trigger_fatal_error("[plugin] unable to fetch: $errstr ($errno)");
return;
}else {
if($_is_proxy) {
fputs($fp,'GET '.$params['file'] ." HTTP/1.0\r\n");
}else {
fputs($fp,"GET $uri HTTP/1.0\r\n");
}
if(!empty($host)) {
fputs($fp,"Host: $host\r\n");
}
if(!empty($accept)) {
fputs($fp,"Accept: $accept\r\n");
}
if(!empty($agent)) {
fputs($fp,"User-Agent: $agent\r\n");
}
if(!empty($referer)) {
fputs($fp,"Referer: $referer\r\n");
}
if(isset($extra_headers) &&is_array($extra_headers)) {
foreach($extra_headers as $curr_header) {
fputs($fp,$curr_header."\r\n");
}
}
if(!empty($user) &&!empty($pass)) {
fputs($fp,"Authorization: BASIC ".base64_encode("$user:$pass")."\r\n");
}
fputs($fp,"\r\n");
while(!feof($fp)) {
$content .= fgets($fp,4096);
}
fclose($fp);
$csplit = split("\r\n\r\n",$content,2);
$content = $csplit[1];
if(!empty($params['assign_headers'])) {
$smarty->assign($params['assign_headers'],split("\r\n",$csplit[0]));
}
}
}else {
$smarty->_trigger_fatal_error("[plugin] unable to parse URL, check syntax");
return;
}
}else {
if($fp = @fopen($params['file'],'r')) {
while(!feof($fp)) {
$content .= fgets ($fp,4096);
}
fclose($fp);
}else {
$smarty->_trigger_fatal_error('[plugin] fetch cannot read file \''.$params['file'] .'\'');
return;
}
}
}
if (!empty($params['assign'])) {
$smarty->assign($params['assign'],$content);
}else {
return $content;
}
}

?>